Improvement in modes of producing vari egated threads



wing/JMJ N.PETERS, PHOTLITHcGRAPHER. WASHINGTON, u C.

UNTED STATES PATENT OFFICE.

ROBERT KERSHAVV, OF PHILADELPHIA, PENNSYLVANIA.

kIMPROVEIVI ENT IN MODES OF PRODUCING VARIEGATED THREADS.

Specificationforming part of Letters Patent No. 55,836, dated October16, 1866.

To alt whom it may Concern.-

Be it known that I, ROBERT Kitnsnnw, of Philadelphia, Pennsylvania, haveinvented a Mode or Process of Producing Variegated Threads; and I dohereby declare the following to be a full, clear, and cXact descriptionof the same, reference being had to the aecompanying drawings, and tothe letters of reference marked thereon.

My invention relates to the production of variegated threads to be usedin the manufacture of variegated textile fabrics; and my inventionconsists in producing a variegated thread by imparting to a centralthread, or to a guide which conveys a wrapping-thread to the centralthread, such a varying', irregular, intermittent, or reversingtraversing motion as will cause the wrappillg-thread to be wound on thecentral thread in differentquantities at different points.

In order to enable others skilled in the art to practice my invention, Iwill now proceed to describe certain mechanism by which it may becarried into effect.

On reference to the accompanying drawings which form a part of thisspeciiication, Figure l is a side elevation of a machine for carryingout my mode of producing varie-- gated threads; Fig. 2, a sectionalelevation; Fig. 3, a plan view; Fig. 4, a detached view of part of themachine, and Fig. 5 a sectional view of Fi 4. f

Similar letters refer to similar parts throughout the several views.

A is the base of the machine, to which are secured the side frames, Band B', and between the latter extend shelves or platforms C and D. Inthe side frames turn shafts F, G, H, and to the former is secured aroller, E, on which bears a detachable presser-roller, E', the journalsof the latter projecting into slots c in the side frames. On one end ofthe shaft F is a pinion, I), the teeth of which are adapted to those ofa sectional pinion, c, secured to the driving-shaft G, and on the outerend of the latter is a grooved pulley, d. On the shaft H are two groovedpulleys, e and f, and round the latter and round the pulley d extends aband, g.

In suitable bearings in the base-plate A and ,in the platform C turns avertical spindle, I,

round a grooved pulley, h, on which and round the pulley c passes aband, g.

In the platform O is secured a ring, K, on which slides the usualtraveler 1', and on the upper end of the shaft or spindle I, whichprojects through the ring K, is a detachable spool, L.

To the platform D, directly above the spindle I, is secured a plate, M,in the outer end of which is an opening a, and to the upper side oftheplate is fastened the lower end ot' an inclined split tube, N, in whichare slots s s.

To the platform D is secured a rod, O, for a purpose describedhereinafter.

The devices above described, with the exception of the tube N and thesectional pinion c, are similar to those used in an ordinarytwisting-machine.

The thread or cord to be spun or twisted is conducted from between thefeed-rollers E E', through the tube N, opening a, and traveler t', tothe spool L.

.As the spool L revolves, the traveler i will be carried rapidly roundon the ring K, and the thread or cord x will be twisted or spun in amanner too well known to those familiar with this class of machines toneed particular description.

A spool, Y, containing a thread, y, of any suitable color, is placed onthe rod O, and the thread from the spool is passed through the slots inthe tube N and secured to the cord w. As the cord is spun or twisted thethread'y is lapped round it, a knot, u, being thus formed on the cord ata point opposite the slot s.

When the teeth of the sectional pinion c are brought into contact withthose of the pinion b the roller E will be caused to turn a portion of arevolution, and the cord rv will be passed quickly downward through thetube N for a short distance, and will then again be held stationaryuntil the teeth of the pinion c are again brought into contact withthose of the pinion b.

As the cord .fr passes quickly through the tube N the thread y will belapped spirally round the cord instead of being formed into a knot. Asecond knot, however, will be formed as before the instant the cord w isagain stationary. As the cord a is twisted and fed intermittent-ly tothe spool L, as described, the

thread y is lapped on the same in alternate knots and spirals, and avariegated thread of the character shown in Fig. ft is thus produced.

rEhe distance between the knots is regulated by the amount of traverseimparted to the cord by the action ofthe rollers, while the size ot' theknots is determined bythe thickness of the thread y, the rapidity of thespinning or twisting motion imparted to the cord x, andthe length oftime the latter is held stationary.

The cord ac may consist of two or more strands of different colors.l Twodifferent colored threads, i may also be introduced together throughlthe same slot s, or separately through slots opposite each other indifferent sides of the tube N. i

A thread having the knots alternately of different colors may beproduced by introducing a thread, y, of one color through the slot S andanother thread of a different color through the slot s', as shown inFig. 5.

By using a tine thread, y, and imparting a tight tension to the same, itmay be so buried .in the cord x as only to appear at points where but atdifferent degrees of speed, another variety of thread being thusproduced.

When it is desired to lap a thread round a Zephyr or other cord, which,when in a iinished state, should be loosely twisted, a tight twistisvrst imparted to the cord. It is then introduced into the machine anduntwisted as it passes through the tube N, thethread y being lappedround the cord during the untwisting ot the latter.

Although I have illustrated and described `peculiar mechanism forcarrying out my in- Producing a variegated thread by imparting to acentral thread, or to a guide which conveys a lapping thread to thecentral thread, such a varying, irregular, intermittent, or reversingtraversing motion as will cause the lapping thread to bc wound on thecentral thread in different quantities at different points.

In testimony whereof I have signed myname to this specification in thepresence of two subscribin g witnesses.

ROBERT KERSHAV.

Witnesses:

CHARLES E. FOSTER, JOHN WHITE.

